build workflow (tj/commander.js)

The build workflow from tj/commander.js, explained and optimized by Latchkey.

What it does

This is the build workflow from the tj/commander.js repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

name: build

on: [push, pull_request, workflow_dispatch]

permissions:
  contents: read

jobs:
  test:
    name: Test on node ${{ matrix.node-version }} and ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        node-version: [22.x, 24.x, 26.x]
        os: [ubuntu-latest, windows-latest, macos-latest]

    steps:
    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
    - name: Use Node.js ${{ matrix.node-version }}
      uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
      with:
        cache: 'npm'
        node-version: ${{ matrix.node-version }}
    # Use separate run commands so command status handled correctly on Windows
    - name: npm install
      run: npm ci
    - name: npm test
      run: npm test
    - name: npm run check
      run: npm run check

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: build
 
on: [push, pull_request, workflow_dispatch]
 
permissions:
  contents: read
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  test:
    timeout-minutes: 30
    name: Test on node ${{ matrix.node-version }} and ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        node-version: [22.x, 24.x, 26.x]
        os: [ubuntu-latest, windows-latest, macos-latest]
 
    steps:
    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
    - name: Use Node.js ${{ matrix.node-version }}
      uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
      with:
        cache: 'npm'
        node-version: ${{ matrix.node-version }}
    # Use separate run commands so command status handled correctly on Windows
    - name: npm install
      run: npm ci
    - name: npm test
      run: npm test
    - name: npm run check
      run: npm run check
 

What changed

• Cancel superseded runs when a branch or PR gets a newer push.
• Add a job timeout so a hung step cannot burn hours of runner time.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

• Dependency installs

This workflow runs 1 job (9 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow